GRAF:Trespasser TPA

TPA

Format type: Audio
Endianness: Little-endian

Format Specifications

uint32 {4} - Version Number (50 01 00 00)

uint32 {4} - Number of WBBlocks (See Notes 1 and 2)
uint32 {4} - Version number? (18 00 00 00)
uint32 {4} - Number of Foley Table Entries (null except for Effects.tpa)
uint32 {4} - Absolute offset of Foley Table (= file size if #FoleyTables = 0)
uint32 {4} - Number of WBTable Entries (Equal to or greater than # of WBBlocks) (See Note 2)

// for each WBTable Entry

uint32 {4} - Sound ID (first one always D9 7B A0 F0) (See Note 3)

uint32 {4} - Absolute offset of WBBlock

uint32 {4} - Size of WBBlock

uint32 {4} - Unknown (Usually null)

char {8} - Header? (WBORn) (null-padded)

uint32 {4} - Size of WBHeader

uint32 {4} - Size of ADPCM Block

uint32 {4} - Size of file data

uint32 {4} - Uncompressed size of file data

uint32 {4} - Sample Rate

byte {1} - Output mode (01 = Mono, 02 = Stereo)

byte {1} - Audio format (00 = PCM, 01 = DVI/IMA ADPCM)

byte {1} - null

uint32 {4} - Caption flag (null = No captions, 24 = Captions)

// for each WBBlock

char {8} - Header? (WBORn) (null-padded)

uint32 {4} - Size of WBHeader

uint32 {4} - Size of ADPCM Block

uint32 {4} - Size of file data

uint32 {4} - Uncompressed size of file data

uint32 {4} - Sample Rate

byte {1} - Output mode (01 = Mono, 02 = Stereo)

byte {1} - Audio format (00 = PCM, 01 = DVI/IMA ADPCM)

byte {1} - null

uint32 {4} - Caption flag (null = No captions, 24 = Captions)

if( captionFlag == 0x00000024 ){

uint32 {4} - Size of caption

uint32 {4} - Number of caption lines (Can't be null)

// For each caption line

uint32 {4} - Length of time to display caption (250ms increments?)

char {x} - Caption line data (null-terminated)

}

byte {x} - File data

//for each Foley Table

uint32 {4} - SoundMaterial1 hash

uint32 {4} - SoundMaterial2 hash

uint32 {4} - NumEffectSounds

uint32 {4} - Unknown

uint64 {8} - Effect hashes

uint32 {4} - Other effect hash

byte {x} - Unknown

Notes and Comments

Note 1 (field names)

Several of the fields in the format specifications are named "WBsomething". This is because of the string "WBOR" which appears regularly throughout every *.tpa file. The "WB" in the field names thus represent the string "WBOR".

Note 2 (number of WBBlocks, WBTables)

The number of WBBlocks in a given file should match the number of WBTables, but sometimes it doesn't. This is because the same sound data will sometimes have two, and possibly even more, Sound IDs. When this happens, the number of WBTables is always higher than the number of WBBlocks.

Note 3 (first WBTable)

The first WBTable always points to a block of zeroes that are either 16536 or 22120 bytes long. This first, missing entry is the default sound played whenever the TPA is missing the sound called for.